Adding Decimals
SUbtracting
Multiplying
Powers of 10's
Other
100

7.17 + 8.23

15.4

100

5.7 - 2.2

3.5

100

1.5 x 3

4.5

100

10^2 

100

100
11 x 12 

132

200

14.51 + 2.343

16.853

200

21.38 - 18.11

3.27

200

15.2 x 2

30.4

200

10^5

100,000

200

7.77 x 8

62.16

300

311.72 + 1 + 81.212

393.932

300

434.8 - 9.28 

425.52

300

5.15 x .3

1.545

300

2.5 x 10^3 

2,500

300

999.15 - 23.71

975.44

400

414.75 + 212.22 + 81.21

708.18

400

9,212.60 - 3,113.2

6,099.4

400

.65 x .22

.143

400

7.7 x 10^6

77,000,000

400

237.902 + .890 

238.792

500

1009.18 + 818.222

1,827.402

500

85.77 - 12.3 - 0.75  

72.72 

500

7.32 x 8.5 

62.22

500

10^0

1

500

1.523 x .9 

1.3707